The following is a list of possible Address Verification Service (AVS) response codes and their corresponding definitions. Each code is unique.

A = Street Address: Match -- First 5 Digits of ZIP: No Match
This response code signifies a perfect match between the street address entered by the customer and the billing address on file with the credit card issuing bank but a mismatch between ZIP codes.

B = Address not provided for AVS check or street address match, postal code could not be verified
This response code signifies that the transaction was submitted to Authorize.Net® without address information so the AVS check could not be performed.

E = AVS Error
This response code signifies that an error occurred on the processing network while processing the AVS request so AVS information is not available for this transaction.

G = Non U.S. Card Issuing Bank
The credit card-issuing bank is not of U.S. origin and does not support the AVS system.

N = Street Address: No Match -- First 5 Digits of ZIP: No Match
Neither the street address nor the ZIP code provided by the customer matches the billing address and ZIP code on file with the card issuing bank.

P = AVS not applicable for this transaction
This response code is returned when address information is not checked against the AVS system. Examples of this would be eCheck.Net® transactions, credits, voids, prior auth capture transactions, capture only transactions, declines and other transactions that do not include address checking.

R = Retry, System Is Unavailable
AVS was unavailable on the processing network or the processor did not respond.

S = AVS Not Supported by Card Issuing Bank
The card issuing bank does not support AVS.

U = Address Information For This Cardholder Is Unavailable
Address information is not available for the customers credit card at the processor.

W = Street Address: No Match -- All 9 Digits of ZIP: Match
The nine-digit ZIP code provided matches the billing ZIP code on file with the card-issuing bank, but the street address provided does not match.

X = Street Address: Match -- All 9 Digits of ZIP: Match
The nine-digit ZIP code and street address provided matches the billing ZIP code and street address on file with the card issuing bank.

Y = Street Address: Match - First 5 Digits of ZIP: Match
The five-digit ZIP code and street address provided matches the billing ZIP code and street address on file with the card-issuing bank.

Z = Street Address: No Match - First 5 Digits of ZIP: Match
The five-digit ZIP code provided matches the billing ZIP code on file with the card issuing bank, but the street address provided does not match.